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| 十四烷基二甲基苄基氯化铵萃取金的研究 | |
| 引用本文： | 姜健准,李小,周维金,高宏成,吴瑾光,徐光宪,陈景.十四烷基二甲基苄基氯化铵萃取金的研究[J].北京大学学报(自然科学版),2000,36(6):766-771. |
| 作者姓名： | 姜健准 李小 周维金 高宏成 吴瑾光 徐光宪 陈景 |
| 作者单位： | 1. 北京大学技术物理学系,北京,100871 2. 北京大学化学与分子工程学院,北京,100871 3. 昆明贵金属研究所,昆明,650031 |
| 基金项目： | 云南省省院省校科技合作项目;; |
| 摘 要： | 用放射性核素198Au示踪法研究了季铵盐十四烷基二甲基苄基氯化铵(TDMBA)从碱性氰化液中萃取金，考察了水相金浓度、助溶剂含量、萃取时间、季铵盐与KAu(CN)2摩尔比值nr等因素对萃取率的影响，并研究了有机相的连续萃取、有机相金含量与水含量的关系。结果表明，助溶剂体积比10%以上时，十四烷基二甲基苄基氯化铵对金具有萃取能力强，平衡时间短的特点。季铵盐阳离子与Au(CN)2-结合比为1∶1,符合离子缔合机理。 |
| 关 键 词： | 溶剂萃取 十四烷基二甲基苄基氯化铵 KAu(CN)2 198Au核素示踪法 |
| 收稿时间： | 2000-03-22 |
Solvent Extraction of Gold from Alkaline Cyanide Solution by Tetradecyldimethylbenzylammonium Chloride |
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| JIANG Jianzhun,LI Xiao,ZHOU Weijin,GAO Hongcheng,WU Jinguang,XU Guangxian,CHEN Jing.Solvent Extraction of Gold from Alkaline Cyanide Solution by Tetradecyldimethylbenzylammonium Chloride[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2000,36(6):766-771. | |
| Authors: | JIANG Jianzhun LI Xiao ZHOU Weijin GAO Hongcheng WU Jinguang XU Guangxian CHEN Jing |
| Institution: | Technical Physics Department, Peking University, Beijing, 100871；College of Chemistry and Molecular Engineering, Peking University, Beijing |
| Abstract: | The solvent extraction of gold from alkaline cyanide solution by tetradecyldimethylbenzylammounium chloride(TDMBA) was described by labeled 198Au. The influence of several variables such as gold and cosolvent concentrations, shaking times, the ratio of TDMBA and gold on the extraction of gold(I) and the water concentration of the organic phase were studied. While the cosolvent ratio is more than 10%, in the TDMBA system, gold(I) was extracted completely. The gold extraction mechanism was discussed on the bases of water concentrations of organic phases and Infrared Spectrum. It was found that the aggregation ratio of TDMBA and Au(CN)2- is 1∶1. |
| Keywords: | KAu(CN)2 |
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